Which of the following is the passive transport process by which large molecules move across the cell membrane with the help of a protein channel? A. facilitated diffusion
B. osmosis
C. simple diffusion
D. endocytosis​

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.

What are the subsystem of the earth

Earth is tilted on its axis. which of these would not exist if earth had no tilt?